The battle system video was interesting, but overall this looks quite rough around the edges.
Don't get me wrong, original graphics are a good thing; but during the battle video I couldn't really tell what was going on right away. (despite the annotations) I love the idea of binding abilities to certain keys for battle though.
On the subject of graphics, aside from what I mentioned earlier; there are certain inconsistencies. Certain objects cast shadows while others don't, the sand textures are kind of jagged and repetitive... As a matter of face, a lot of the game looks like that. Also, the character appears to just SLIDE across the level rather than walk. If you're using a standard three frame animation, try shifting the neutral sprite one pixel down.
All in all, this is a lot more interesting than the screenshots would have one think, you just need to refine things here. You're using a simplistic style; that means it's all the easier to refine things and even animate easier / better.